Bed-spring



NiTEn STATES PATENT OFFICE.

DANIEL F. MITCHEL, OF FERNDALE, CALIFORNIA.

BED-SPRING.

SPECIFICATION forming part of Letters Patent No. 264,468, dated September 19, 1882.

Application led J Lily 20, 1882.

which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which lforma part of this specification.

Thisin'vention relates to bed-springs; 'and it consists in certain improvements in the construction and operation of the same, as will be hereinafter set forth and claimed.

In the drawings, Figure l is a top view of a bed-bottom equipped with my improved ar' rangement of springs; Fig.2, a side view thereol', Fig. 3, a vertical longitudinal sectional view on the line x x, Fig. l; Fig. 4, a detail view, illustrating the fastening and its mode of connection; and Fig. 5, a like view of a modiiication. 1

Referring to the drawings, A designates the longitudinal parallel slats of a bed-bottom, which are connected at their ends by crossslats B B. On slats A are arranged twin bedsprings C C, having a diagonal cross-connecting portion, l), the twin springs being so arranged that their portionsD will cross each other, thus forming a separate quadruple arrangement of springs E, extendingin alongitudinal series down each two slats A A. At the bottom of the bed the twin Vsprings may be arranged separately, as shown, and also constructed of more exible wire than those forming the quadruple series in the body of the bed. rlhe function of this arrangement is that the whole surface of the bed, notwithstanding the unequal weight at the different portions, will sink proportionately, as the-heavy weight of the trunk, shoulders, vand head of the body will depress the stronger spring arrangement to about the same level as the lighter weight of the feet and limbs will depress the more elastic foot-sprin g portion. Each spring O is secured to the slat by a shank, E', which passes through a perforation, F, in the slat, the spring being supported on the latter by ashoulder, G, formed in its wire above shank E.

H designates a fastening for securing the twinsprin gs of a quadruple series together at (No model.)

the point where their connecting portions D l cross. This fastening comprises a top plate or disk, I, having ou its under side four short rivet-shanks,J, between which portions D pass. Rivets J pass through perfor-ations K in an under clamping plate or disk., L, and are clinched against the under side of said plate to secure plates I and L together. This forms a very durable and ecient fastening, and yet admits of play ofthe springs.

In the modification shown in Fig. 5 the under plate, L, is simply dispensed with, and the rivets clinched against the under side of spring portions D,which in some cases serves equally as well as the complete fasten-ing above described.

The two longitudinal series ot' quadruple springs at each side of the bed are connected by dia-goi'ially-disposed rods M, having hooked ends N N, by which they are connected to the springs. rlhe series are unconnected at the center of the bed, so thatitis dividedinto two separate and independent sections. Therefore when two persons occupy the bed the movements of one interfere in no way with the other half of the bed. At the same time the iiexibility is not decreased.

The springs around the edge of the bed are preferably connected by rods 0, having hooked ends P P for securing to the springs. 'l'hus 4a strong edge series is formed, inclosing the central portion. Y

The operation and advantages of the device will be readily-understood. It is simple, compact, durable, inexpensive, and efficient. if desired,acanvas covering may7 be applied,slack being left to allow for depression of the springs.

I claim and desire to secure by Letters Patent- Y 1. A spring bed-bottom having the arrangement ot'strong springs at the top and main portion and lighter or more liexible springs at the foot, as set forth.

2. A bed-bottom having the main portion formed of twin springs connected together in quadruple sections and the foot or lower portion formed of separate and independent twin springs, whereby it is more flexible and will give more readily than the main portion, as and for the purpose set forth. y

3. 1n a bed-bottom, the combination, with the slats having the perforations, of the springs ICO having a shank at their lower ends to it therein, and a supporting-shoulder formed above said shank, as set forth.

4. In a bed-bottom, the combination, with the quad rnple series i'ormedot'two twin springs having; their connecting portions extending diagonally and crossing each other, ot' the securing` plate or disk having rivet-Shanks on its under side, between which the connecting por. tions pass, and the perforated bottom clamp` ing-plate nnderivbicli the rivets are clinched, as set forth.

5. Inabed-bottom composed of longitudinal series of springs, the combination, with the side series, of diagonally-disposed connectingrods having booked ends, the series being nneonnected at the center, so that the bed is divided into two sections separate and independent, as set forth.

6. A. bed-bottom composed of longitudinal series ot' springs connected together at the sides, but unconnected at the center, so that the bed is divided into two separate and independent sections, as set forth.

In testimony that l claim the foregoing as my own I have hereto ailixed my signature in presence of two witnesses.

DANIEL F. MITCHEL.

Witnesses:

D. A. DYER, E. WEAVER. 

